33 90... Troubleshooting rear differential
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 128i, and 2009 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.
In order to troubleshoot "Noises/leaks on rear differential", it is necessary to work through the fault diagnosis tree using the BMW Diagnosis and Information System.
under:
- Fault pattern selection
-> 331001 Noises rear differential
-> 331002 Leaks rear differential
- Service functions
-> Complete vehicle
-> Drive
-> Mechanics
-> Noises/ leaks